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From Stefan Hubert <stefan.hub...@gmail.com>
Subject Re: [MATH] Ordinary differential equations - stiff solver
Date Tue, 26 Apr 2016 15:53:18 GMT
Hi Giles,

Thanks for letting me know. I will see how I can get this thing started :)

Best,
Stefan



On Sat, Apr 23, 2016 at 5:32 AM, Gilles <gilles@harfang.homelinux.org>
wrote:

> Hi.
>
> There is also a long-pending issue on that subject:
>   https://issues.apache.org/jira/browse/MATH-172
>
> Regards,
> Gilles
>
>
>
> On Thu, 21 Apr 2016 02:55:42 +0200, Gilles wrote:
>
>> Hi.
>>
>> On Fri, 15 Apr 2016 21:41:32 -0400, Stefan Hubert wrote:
>>
>>> Hello Gilles,
>>>
>>> the Java code I have from LSODA is from a C-Code translation, which was
>>> at
>>> MIT license.
>>>
>>> I would definitely offer the LSODA Java code I already have, to get
>>> things
>>> started. Is anyone else interested in starting this project? How can we
>>> start it?
>>>
>>
>> You could post a proposal on the "dev" ML.
>> But you should be ready to make most of the adaptation work; Commons Math
>> is a project that needs contributors... :-}
>>
>> Best,
>>> Stefan
>>>
>>>
>>>
>>> On Fri, Apr 15, 2016 at 9:00 AM, Gilles <gilles@harfang.homelinux.org>
>>> wrote:
>>>
>>> Hello.
>>>>
>>>> On Fri, 15 Apr 2016 08:30:39 -0400, Stefan Hubert wrote:
>>>>
>>>> Hi everybody!
>>>>>
>>>>> I am curious if a support for solving stiff ordinary differential
>>>>> equations
>>>>> is planned in future?
>>>>>
>>>>> There are a lot of them available for Fortran 77 (e. g.
>>>>>
>>>>> https://people.sc.fsu.edu/~jburkardt/f77_src/odepack/odepack.html). I
>>>>> do
>>>>> have a direct Java translation
>>>>>
>>>>>
>>>> We should be wary of direct translations, as they are no more
>>>> understandable
>>>> than the original source.
>>>> Commons Math, being implemented in _pure_ Java, should be an
>>>> object-oriented
>>>> library.
>>>>
>>>> of LSODE,
>>>>
>>>>>
>>>>>
>>>> Unless I'm mistaken, there is no license.
>>>>
>>>> maybe this helps to get started?
>>>>
>>>>>
>>>>>
>>>> Yes, if you are willing to use it as a reference implementation of a
>>>> new,
>>>> independent, free, object-oriented version of the functionality.
>>>>
>>>> Best regards,
>>>> Gilles
>>>>
>>>>
>>>> Best,
>>>>> Stefan
>>>>>
>>>>>
>
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